80386SX/25 MHZ Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	25MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	16MB
Maximum Video Memory	None
Cache	None
BIOS	Unidentified
Dimensions	Unidentified
I/O Options	Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, PS/2 mouse interface, serial ports (2), VGA port, external CRT controller
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface	CN1	Serial port 1	CN10
Floppy drive interface	CN2	VGA port	CN11
IDE interface LED	CN3	Auxiliary keyboard connector	CN12
IDE indicator connector	CN4	Serial connector 2	CN13
System interface	CN5	PS/2 mouse interface	CN14
PS/2 mouse port	CN7	External CRT controller	CN15
Parallel port	CN8	External battery	CN16
Serial port 2	CN9	Keyswitch connector	CN17

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Monitor type select color	X1	Pins 2 & 3 closed
	Monitor type select monochrome	X1	Pins 1 & 2 closed
»	On board I/O enabled	X3	Closed
	On board I/O disabled	X3	Open
»	Factory configured - do not alter	X4	Unidentified
»	Automatic recognition of HD & DD floppy drives enabled	X6	Pins 1 & 2 closed
	Automatic recognition of HD & DD floppy drives disabled	X6	Pins 2 & 3 closed
»	VGA IRQ9 enabled	X9	Closed
	VGA IRQ9 disabled	X9	Open
»	ISA bus driver current select 12mA	X30	Pins 2 & 3 closed
	ISA bus driver current select 24mA	X30	Pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
2MB	(2) 1M x 9	None
4MB	(2) 1M x 9	(2) 1M x 9
8MB	(2) 4M x 9	None
10MB	(2) 1M x 9	(2) 4M x 9
16MB	(2) 4M x 9	(2) 4M x 9